Holy. F*%$&!. CRAP!! 1000% better; even better than the Retrocon mod! It immedately felt super-comfortable and the concave design fit my thumb perfectly. Whereas the Retrocon cap, even though it has a rubber coating, is smaller and I found myself tryng to 'center' my thumb in the subtle dimple. DaveC's cap allows you to lay your thumb in a more natural flat position inside the large concave. Ths will prevent cramping I'm sure I had to stuff a teeny bit of paper inside the sleeve, as it sat too low, hitting the sides of the joystick 'well'. Afterwards, I fired up the best platformer ever (Kid Chameleon for Genesis) and was truly amazed at the improved responsiveness. Maybe now I'll finally be able to finish this game (14 years ... must be some knd of record :lol: ) I HIGHLY suggest you get one (if he's still making them) ... you'll be amazed. Thanks DaveC .