i've got the pin one on mine, and I don't really like it- I took mine out. I should add though that I'm a bit, er, challenged when it comes to anything mechanical, so it's entirely possible that I'm doing something wrong- but I thought it was a lot more fiddly than all the tremol-no videos would have you believe, and I never got it working 100% perfectly. Also, I couldn't get the deep-C thingy to fit either without impeding the up-pull- no idea if that's just my springs or if all the gotohs are like that.