[Help] Vessel fly's immediately into space upon unpack

[DSM92]

I've been doing some modding to a few parts, just working on prototypes right now. Ran into a problem when testing these parts: upon unpack from VAB they go flying into space. To clarify, I can't see the parts and my camera is in a fixed position (Can't rotate view).

I suspect it might have to do with reducing the parts' mass to zero?

[miracmert]

You suspect right Why are you reducing the mass to zero?

[DSM92]

I wanted to replace part mass with resource mass that could be consumed, for a futuristic utility. Parts produce mass at 9.8. Neutralizer consumes mass at 9.8. Reducer consumes mass at a slower rate to control your acceleration and so on. Turn the reducer off when you are happy with your mass, turn off the Neutralizer when you want to return to normal mass.

Do you know what the lower limit is for mass, then?

Just in the experimentation phase right now, of course I'm going to make it require stupid amounts of energy

[Trueborn]

You ought to be able to define a new resource to be used by your plugin rather than using the part's mass itself. Then you can make the part 0.01 tons (or whatever you experimentally determine to be the lower limit to be) and have the resource make up the rest of the mass. Obviously this won't work if you want it to affect every part on the vessel, in which case you would have to totally replace the stock mass system.