Getting head work done, Ti retainer advice pls.
So i dropped my bike off at Porttech the other day. Ive heard lots of good things about this guy so i feel pretty comfortable having him do the head work. We talked for 15 minutes or so when i dropped the bike off and he said he did not like putting Ti valve spring retainers in which is the total opposite of everything ive heard. Ive heard that Kawi put Ti in the 07 model because they were stronger but Bill the guy building my head said that though they are stronger, its strange, they get the hole in the center beveled out, grinded or pounded out, cant remember how he put it, after time and the stock ones wont do that. I told him i was trusting his build as he lives and breathes drag racing and has done TONS of engine builds. I just told him to go with what he knows works and what he has used in the past that works. He let me know with a little grin that my build was nothing crazy and that he's done tons of them like this and not to worry. He's a really reputable builder so like i said i feel i can trust him and in the end he knows a hell of a lot more than i do and has a shitload more experience. He talked like he already had the build mapped out in his head what he wanted to do and already knew exactly what cam timing he was going to use like he had already done it in his sleep that night. So what do you guys think? Think things will be ok without Ti spring retainers? Im having it ported, milled, thin HG, cam. Thanks