Has anyone out there found an add-on shifter lock-out for 5th and 6th gear on the 6-speeds? I've noticed that it can be difficult to make a fast 2-3 shift without ending up hitting the gate or ending up in 5th. I've only had the car a few months so I'm sure my technique will get better with time but when I am at the track, I don't want to mess around. I just want to throw the shifter up and right hard to get it into gear like I would on my old four-speed. Has anyone seen something like this before and/or know where to get an add-on kit? Thanks.