Is this some sort of PvP build ?
Gambler's Cut -- Acc(A), Acc(3), Acc(3), DefDeb(5), DefDeb(5), DefDeb(7)
3 Acc with Focused accuracy is overkill. Additionally scrappers should slot acc and dam over their secondary effects as a general rule.
Build Up -- ToHit(A), ToHit(23), ToHit(25), RechRdx(25), RechRdx(27), RechRdx(27)
Slotting Tohit buffs in build up or aim is generally unneccesarry in PvE
Level 35: Tough -- ResDam(A), ResDam(40), ResDam(40), EndRdx(42), EndRdx(42), EndRdx(42)
Level 38: Weave -- DefBuff(A), DefBuff(43), DefBuff(43), EndRdx(43), EndRdx(45), EndRdx(45)
3 slots saves +0.16 end/second in each
A Single endrec slot in Golden Dragonfly saves 3.9 end every 12 seconds (0.325 end/sec)
A single endrec in Soaring dragon saves 3.1 end every 9 seconds (0.3444 end/sec)
I just dont understand the why of this build. Perhaps you could elaborate on the thoughts behind it then we can comment from a better position.