pinion slip

[no mods]

i guess this is a newbie question but i for what ever reason am having a hell of a time getting pinion gears to stay put. I have tried the set screw alone. I have tried locktite on the set screw, i have tried the locktite on the shaft. I have tried locktite on the shaft and the set screw haha.. other than grinding a flatspot on my motor shaft what are some other ideas or tips comes to attaching these large mod 1 size gears.




ps: tony i know you will see this. ill take pics of mug as soon as my fans come in. you'll dig...