Deteriorating orbit in low gravity conditions

[SonicControlre]

I haven't been here for ages, so forgive me if I've putted this into the wrong part of the forums.

Let me get started. So I had a mission to Minmus. When I've putted my vessel into orbit, or to be more precise around ~100km circular orbit, I left it there. I went out for a while, and when I got back my periapsis is below the surface already.

Lucky me I did a quicksave before being AFK, so I quickloaded and checked the readouts from KER. Appareantly I'm decelerating by 0.01m/s^2.

What could be the cause for this? Clipped parts, maybe? I have a lot of them in the vessel. As for mods, here are the ones I use:

ModuleManger (duh)

KER (again, duh)

Kerbal Alarm Clock

StowedWheelFix (it's just .cfg, I doubt it will do much harm)

BetterBurnTime

and a two graphic mods: PlanetShine and Distant Object Enhancement

Please help, I have not loaded my vessel till now in fear of wasting delta-v. 

[Sharpy]

Press alt-X, just in case you set trim on the engine or RCS.

It was several times that I caught my rovers speeding up incessantly. Reason? Keeping holding arrow up (I have 'drive forward' mapped to arrows), while doing Alt-., to increase phys-warp speed. As result, Alt-arrow up meant trim on the accelerator.

 

One more thing: if you hyperedit satellites into orbit from the surface, it does cause orbit drift. There might be a bug that does that without hyperedit...

Edited October 21, 2016 by Sharpy

[Majorjim!]

Remove ALL mods and see if it occurs again.

[magnemoe]

7 hours ago, Sharpy said:

Press alt-X, just in case you set trim on the engine or RCS.

It was several times that I caught my rovers speeding up incessantly. Reason? Keeping holding arrow up (I have 'drive forward' mapped to arrows), while doing Alt-., to increase phys-warp speed. As result, Alt-arrow up meant trim on the accelerator.

 

One more thing: if you hyperedit satellites into orbit from the surface, it does cause orbit drift. There might be a bug that does that without hyperedit...

Hyperedit is known to cause drift and other weird stuff like the craft believing it has landed or have zero orbital speed
Going to tracking station and then back resolves this. 
Smart to save while on pad, this let you just load and recover after test. 

[SonicControlre]

I've used hyperedit back in 0.25 before, but I usually edit the config files and abuse the debug menu if I'm up to cheating now.

Side note, I'm still at 1.1.3. Current internet conditions only permit me to do forum and reddit stuff, which are highly text related. (10KBps)

Will do the remove all mods then test method. BTW my orbital drift compensation setting is enabled.

[Capt. Hunt]

If you are using a stick and/or throttle, you may need to tap X to cut engines after a burn.  I've noticed on my CH Pro-ThrottleUSB it zeros at about 10% thrust.

[SonicControlre]

Ok, I removed all other stuff other than the Squad folder in the Gamedata folder, and loaded the game.

Instead of deteriorating 'smoothly', the periapsis of my orbit is fluctuating by a few meters to a few dozen.

I can't think of any mods that might cause this though.

I will put back KER, ModuleManager and StowedWheelFix just to see if any of them are the culprit.

Edit: I forgot to add, I pressed Alt-X but nothing changes.

Edited October 22, 2016 by SonicControlre
Forgot to add something