dlan, I balanced mine at 4 1/4" initially and it was still nose-heavy, so I removed some weight from the nose. Not sure where mine is at currently, but I would think it's around 4 1/2" or so. I wouldn't have any concerns about the weight otherwise - who knows how accurate our bathroom scales are anyways. The Tiger has so much wing area and is so docile that another pound isn't going to make a big difference. The 91 will pull it around no problem.

BTW, nice looking plane! Good luck on the maiden.