BELT SLIPPING ON PULLEY

i stole this idea from one of our members i dont remember who but they where haveing prob's with a tumbler belt that stretched and they added some electric tape to the pulley groove and i just had the same thing happen with a grinder,, no matter how tight i made the belt when i put pressure on the sanding drum it would slow the drum down because the belt was still slipping and to change the belt you have to take out the bearings and arbor to slip another belt on,,so i fig id give it a try and i gotta say one piece of tape that went around the pully once did the trick no more slipping--and it saved me from taking apart the whole grinder one thing i learned is when you have something with bearings and critical alinements the less you mess with them the better hahaha,, i know if i would have takin it apart and moved everything around i would have had extra probs with bearings and what not it was running great befor and its still runnin great now and it cost about a penney in tape to fix so im happy