Hi Kirk:
For some reason, I was unable to see the pics you posted but if you send them directly to me, I'd be happy to take a look at everything.
Those 97mm Turbo cylinders with the half fins were NOT their best idea and they finally scrapped them in 1992 going to a fully-finned version. I never reuse them due to their poor & uneven cooling.
Send me the pics so I can help.
