...when i re-eqipd nihgtingale bow it just show based damage 105, so what happen to 31+? is the + to more base damage how much more i get with my 55% more bow damange once i equip them?
...also can I do fine without my 55% more bow damange and wear the rest of my guilds master armor? I like the mataching set, then the gloves n helm that look ugly but give me more bow damage.?
For your first question, sometimes the damage does not calculate correctly. Just exit the menu, re-enter, and it should show the correct values. Happens to me all the time.
As for wanting a matching set of gear, but still wanting more fortify archery damage, look for rings and necklaces with fortify archery. If you can do without your thieves guild hood, you can also wear a circlet with fortify archery.
I still use my Nightingale Bow (level 53), as I have not found a better one that works for me. I have about 3 Daedric Bows @ legendary, but my Nightingale still does more base damge with most enemies at Legendary. Although, more and more merchants have Daedric bows in their inventory. I am waiting for one that has 50 points lightning damage.
Good luck.