http://bmxglider.tripod.com/ogugeneralmaleinfo.html
according to this, 3-5 oz is normal. When converted Grams to oz, using this;
http://www.metric-conversions.org/weight/grams-to-ounces.htm
That equals;
34 g = 1.19931 oz
So according to these findings, your glider is just fine, based on his age, and that he's just gaining healthy weight. :3
Just last night I went in for a check up with my baby 12 week OOP baby who had had a UTI, and we were giving her a follow up after a week and half regiment of medicine.
I can't cite the exact before and after numbers, but the vet said she gained 10 grams since our last visit! :D The little porker x3 She's definitely feeling much better and is eating right, and gaining healthy weight ;3