Tons of feedback on this in the archives. Look up a post by Huck, he had some good results at 50mg/day. Personally, with Oxandrolone only, I would go a minimum of 8 weeks and dosage of 40-60mg/ day.
There is also a formula in the archives that correlates Oxandrolone dosage to bodyweight.
6 weeks is not long enough. Minimum 3 months, is my opinion right now, or even longer.
Or up the dose to 50-60, but still 6 weeks is crap.
Also 35 mgr is a bridging dose.