OK here are some pics of my stuf from KS tubing -
I tilt the engine for a simple system setup and it doesn't make the plane fly lopsided .
The only problem with the KS-is many "model builders" can't/won't learn to silver braze.
It does take practice and if possible help first time from some one who understands it.
I build the system right in place -on the model .
And I don't burn the model or the engine .
How? SS is very poor at heat transfer - I can hold -bare handed - a 6" piece of tube while I tack the other end.