Bernard;

Thanks for follow up post...I'm happy to hear that you are not experiencing a noise increase with the steel TGear.

...but something else you state can't be quite right: "I used to cruise at 4,000 rpm on the freeway, and now it seems like I need 4,200 rpm to maintain the same speed."

...that's impossible as RPM and Speed are tied together by hard unchanging factors...namely Gearbox and Diff Ratios, as well as Tire Circumference, and I presume none of those have changed...if THE ONLY thing that was changed was Timing Gear and carb tune, I have to suggest that you changed something in either the carb tune OR the Ign Timing (which obviously had to be reset after TGear install), to put engine into a region of operation where it produces less power.

Your engine is now working harder and under a higher Load (throttle depressed further), but for that given speed, the RPMs MUST be the same they were before. I suggest you check, adjust, optimize Timing and Carb tune to bring the engine back to where it was.

Good Hunting!