From my experience, the Moose seals for the Zokes suck. The OEM stuff is fine if installed correctly and there are no other problems. I do fork work for my brother, nephew, and riding friends, mainly Zokes and WPs. One time my buddy could not keep seals in his KTM WPs, leaked from the right leg after one ride. A close inspection revealed a fine scratch about 8" long, probably from trapped sand. It was enough to slice up a new seal. Point is don't blame the problem on seal quality, but look to more obvious causes. Oh, and just becuse you had a shop do the work does not mean it was done right. unless it was Les or another guy you know that takes pride in his work. I had stuff screwed up by big name west coast shops in the past, where I think the hired help does the grunt work and the guru just specs valving.