Howdy all. I’m doing a 95” on an 02 RK and would like to share my position and hopefully get some solid feedback. I’m overseas & have no access to a machine shop that does porting. I’d rather not ship them back to the States because of the expense, hassle/expense with customs here upon return & the down time. So I’m considering doing a little tuning myself. 1: I understand that where the manifold gasket meets the head, any extra pronounced ledge on the head can be filed down to eliminate that resistance. My question is would this sacrifice atomization? 2: would polishing the rough cast in the ports & manifold increase flow or could that sacrifice atomization? 3: I have kibblewhite black diamond valves for this project. If my seats & guides are clean could I do a good laping & installation without a valve job (cutting)? 4: would polishing the combustion chamber (while the old valves are still in of course) be beneficial? Appreciate any help & ideas!!!