Finished wiring cleanup
Installed baffling
Installed plenum
Installed cowling
Did 1hr test flight
CHTs good for cylinders 2,3,4, never above 380
CHT for cylinder 1 too low, never hit 300 ... removed metal tape on front inlet
Oil temp went too high at 225 ... removed lower inlet blocks, removed throttle body elbow and increased outlet opening at bottom end of cowling
Had lower spark plugs fouled, so removed, cleaned and reinstalled them