Love your addon since oSkin :)
I also love Leatrix Plus Classic. Using the Enhance Questlog feature of LTP works like a charm, but is a bit buggy at the Enhance Professions feature.
Questlog works perfectly and has the same size like...
...the Tradeskill Window where the background is cut at the bottom. Skinning the top statusbar works perfectly except...
...for the enchanting window (no tradeskill), the original statusbar is shown.
Last one could be fixed by adding _G.CraftRankFrameBorder:GetNormalTexture():SetTexture(nil) in line 694 of ClassicSupport.lua.
Tried to play around with the xy of TradeSkillUI and CraftUI (x2=-33, y2=50). Got the enhanced UIs solved but messed up the original ones. Maybe we need a new addon skin? ;-)
Hope you could fix it <3
p.s.: Enhanced windows look perfectly when skinning is disabled. So LTP is not the problem :S