Most difficult part of conversion ?

People always ask me what was the most difficult part of the conversion. For me it was the time spent on the gearbox. I had read all the comments on the forum about how to do the mod. The easiest part of course is switching the tailpiece from the 12A gearbox. The more difficult part is cutting the gear selector rod to fit and redrilling the hole. There is no room for error here. Cut the shaft too short and you can't select 2nd 4th or reverse. Cut it too long and you can't get 1st, 3rd or 5th (but at least you can cut it shorter !). Then there is the hole. Cut at the wrong angle and you're not going to get some gears. And you have to half assemble the box to test ! Yes...I messed up the first shaft. So then I only had one shaft left. I took my time and was so thankful when I could select all gears ! Then slowly put the box together taking care to seal all the joints. Looking back the only regret I have is not replacing the front and rear seals on that box. I'm sure I have a leak. It was such a simple upgrade to do especially since the box is 15 years old as well.