Manual transmission rebuild - final checks

[69Mach1 M code 20]

I've completed a rebuild of a 4-speed toploader including gears, blocking rings, bearings, etc. Everything appears to be working correctly when I shift it by hand. My only concern is the blocking rings sticking to the tapers on the gears once it's installed and on the road. Am I just being paranoid from YouTube overload or is there a better method for final checks before buttoning up the cover?

[1969_Mach1 333]

That shouldn't be a problem.  When I rebuilt mine I ended needing new gears, etc. like you went through.  At times on the bench it looked like a brass blocker ring might stick to a gear.  But, it works fine.  When doing your final checks on the bench all I can add is make certain everything is well lubricated with a GL4 rated gear oil (not GL5 or GL4 and GL5 rated).  I also used a trans assembly lube for assembly as it has a low melting point and mixes with the oil.  Greases for assembly will never melt and mix in.  So with greases any metal shavings from a fresh rebuilt (which will happen) will stick to the grease and won't drain out with the oil.

Be certain to change the oil frequently to get any metal particles out.  They say 500 miles, I've changed mine twice in about 100 miles.  So far okay.

Initially I had a trans shop rebuild mine, they used grease for assembly and didn't inform me to change the oil soon after use.  After a few hundred miles metal particles from the rebuild ruined the rear bearing and the inside of the case was completely coated with grease and embedded metal particles. 

[Brian Conway 264]

My 69 RUG AE2 trans has a drain plug.  In that OE plug are installed a pair of small magnets.  Pretty clever of the manufacturer to think of that.  Brian

[69Mach1 M code 20]

Thanks for the replies. I can rest a little easier. I'll be sure to drain and replace the oil after a few trips around town.