Hey Roger how are you?
I have screwed around with every como of fletching from a normal helical to lots of helical as well as a few degrees of offset to as much offset as I can get on an arrow. I've found that it makes no difference on a crossbow. I suggest you flip a coin. I use the helical mostly because I like how it looks good to me. I have not tried a left helical.
Super glue in gel form works well as does bohning's instant gel. The bes part of the bohning is the super fine hole in the tip. Lots of guys like goat tough. Bohning's platinum works well but I've found that you shouldn't use the arrow for at least two days.
If you are really articulate and have good hand eye co-ordination then the Norway stripper works well. They can damage a carbon arrow in a heart beat. The same goes with a razor but the weight and shape of the Norway is just that much better than a razor. The best thing the start with is a dull razor or bohning's stripper both are good because they aren't real sharp. What glue does not come off can be scraped off with the razor held 90 degrees to the shaft.
I think Mike/smokepole has the DVD but may have sent if off to someone else by now.
Nice to see you back online Roger. How's that BPS treating you?