I need more thrust

[Gaarst]

So I've come to that point in my RSS save where even the 24MN 4xEmu cluster from SpaceY Expanded is not enough to lift my rockets.

My latest design, a three core 7.5m rocket made to put payload heavier than 100t to LEO, weighs 3700t and is hardly lift by 3 of these 4 Emu clusters. The problem is, it's currently fully fueled by hydrolox and I'd like to use kerolox for the first stages which is a lot heavier, to achieve better performance.

Any ideas or mod that don't involve 30-engines clusters or F-1s salvaged from a Saturn V mod ?

[AlmostNASA]

Tweakscaled KW rocketry engines of stocklike Real Bcale Boosters

[Gaarst]

4 minutes ago, AlmostNASA said:

Tweakscaled KW rocketry engines of stocklike Real Bcale Boosters

I have a bad experience with TweakScaling parts that produce thrust (thrust not being scaled up) so I try to avoid that, but I will give it a try. Didn't think about RSB, I will see if there is something that can help me in the mod (though I really don't want to use F-1s )