Hallo! Welcome to the forum! I ride a 24" bike, they are very similar to 26" bikes but handle completely different. They are at home on two wheels and rolling fast not simply hopping around on the backwheel.
Haahahaha Classic bit of TF there. Chances are I have tried a move similar to the new one im trying to learn so it wont take too long. Except if its a switzerland squeaker...
Ah right, you could just buy one and hope it will work but I think it would be better to phone up Barbara at cleanbikes and ask her. She will know herselft or will know someone to ask to find out, either way she will give you an answer.
On a mod I'm tempted to say that bunny hopping would give you the highest but it all depends on you. What your strengths are. On a 26" tapping is the only real way to backwheel high but I have seen it done on a mod but it is god damn hard.
It all depends on the amount of clearence avaliable and what lenght would provide a good chain line without sticking out way too far. Why not measure the original one in/on the bike?
You need to tighten the opposite side (just finger tight) then hold it with an 8mm allen key then undo the stuck side with another 8mm allen key and loosen side which was not stuck. It might be worth giving the threads abit of a clean when you get the bolt out to try and remove and stuff in there that might cause it to happen again.
I had a quick ride on Porters yesterday and it was very nice indeed. Even with huge scratches on the down tube and some silly advertising on it. On another note, an update on mannings wheelbase: 1140 mm and growing!