I had a red hitman and did some stuff that i think made it play better first i deshield and cleaned ths bearing then lubeded it the i took off the caps to take them off i got a thumb take and stabed it then got a knife and poped it out the i satined it when i just did the red part it started to wobble so i had yo also satin the rims then i had my friend silicone it just 1 side and know it plays pretty good i can grind for like i can grind for like 5-9 seconds so if you want to modifey yoyr hitman i think this made mine play better.