moar engines (like raptor) with clustering technology

[Kerbinator-Fras]

Show example of how to use engine clustering, mount and auto-fairing.
I tried to use meshes from ROEngines to build clusters (raptor test) but FAILED,however I need this(can sharply reduce part count)
And the variants of engines is still not that enough lol(LFEs are still not enough such as Raptor missing)
ofc you can use meshes from ROEngines to ease workload lol,only need to update configs(you can choose either keep meshes in ROEngines directory or merge them into SSTU)
This can be used both in stock (with mesh) and RO environment (I think SSTU is essential in RO cuz I really love it,beautiful and part-count-saving to 1/2~1/3).
KSP-RO/ROEngines#61 (as reference)
@shadowmage45

[Jimbodiah]

I tried using LqdMethane as a fuel fro CRP but it will not take, this is already logged as an issue. I just rescaled other engines as model and just updated the engine stats into new parts, but there is an issue with the CRP fuel for them.