What is the nominal o.d. Dimension on a gen 2 hemi rocker shaft? I'm trying to figure out if my dli roller rockers bushings are worn too much. I had a couple of backfires in the mp crossram this spring and now the motor is smoking a bit ( it wasn't before). I had noticed when I built the motor that when I ran it with the duel plug valve covers with no block off plug in the cover ( you can look in on the valve train this way) that a lot of oil came out of the bushing and dropped into the general area of the spark plug making me think they must be worn. Now that I'm chasing this new issue I might as well check them out also. I'm thinking the smoke is being caused by a compromised intake gasket but like I said might as well check all of this stuff out. Motor has about 3500 miles on it so I don't think it's guides or seals. Thanks, Dave

Rocker Shafts
Diameter .873"
Rocker Shaft to Bracket Clearance .0009"-.0026"
Rocker Shaft to Rocker Arm Clearance .0007"-.0012"

Thanks rick!