I replaced the original motors and gearboxes (standard EQ6) with new ones, have a look:
http://www.iceinspace.com.au/forum/s...ad.php?t=43823
My plan is to go further and to put belt pulleys inside the mount (I am still not sure how I am going to do it... the space inside is very tight indeed).
But even as it is now, I have smaller PE. The un-even jumps are still there, though (because 47-teeth transfer gears are still there, together with their imperfections).
One day, when belts are in, I hope to achieve smooth PE curve.