I think this is the same problem that KingMort reported here:
http://www.eqemulator.org/forums/showthread.php?t=33438
I think the Raid Addicts max level is 87, Astal said his server max level is 85, and I am going to guess that blackdragonsdg's server goes above 75 as well. Also, I assume that characters who are level 75 or less on your servers are working as they should.
Thanks to blackdragonsdg's note about reverting to Rev1874, I think I figured out the problem is from Rev1875:
Skill caps now use the MaxLevel rule instead of being hard capped at level 75.
http://code.google.com/p/projecteqem.../detail?r=1875
Since skills are pulled from the Database, and the skills table only goes up to 75 (from PEQ), then any level over that is probably causing weird skill issues for your chars. The solution is to either fill in your skill_caps table to have skills up to the max level of your server or we will need to modify the source to make it max out at whatever the skills_caps table maxes at. Probably the second solution is best in the long run, but in the meantime I will try to get a download up of the skill table I use that I pulled directly from the EQ client skillcaps.txt file that goes up to level 85.