Hi Group

I`m in the process of mounting my iko rails to my Y axis.
This is a 4 X 4 tube which has been blanchard ground. I`m
concerned that it is too difficult to move the sliding blocks.
I realize that the two rails must be parallel and coplanar.
It seems these ebay purchases have a considerable preload
designed into the sliding blocks. There is a good amount of
resistance even when one block is pushed. I mounted plywood
to both blocks on each rail and bolted them down. It is very
stiff now. I`m not certain a 600 OZ*IN stepper turning a
.200 pitch ball screw will have enough power to push the
load. Does anyone have experience with the iko that have
preload. I`m wondering if its normal to be so stiff.

LWHG 25 IS THE BASE NUMBER.
T2 MEANS MEDIUM PRELOAD
P IS PRECISION ACCURACY.