Tie Plate - Drill out existing holes
After several iterations of careful measurements, I concluded that the tie plate was too narrow by about 0.032".
Most of this error was on the #1 side.
On the #2 side, I was able to loosen the FH screws on the Guide Yolk / Tie Plate, space the guides with the Adjustable Parallel, re-tighten, and have smooth crosshead travel.
The #1 side needed more adjustment than was available.
Drilled the existing 3-48 holes out with 3/16 Drill.
Tie Plate - Drill out existing holes
After several iterations of careful measurements, I concluded that the tie plate was too narrow by about 0.032".
Most of this error was on the #1 side.
On the #2 side, I was able to loosen the FH screws on the Guide Yolk / Tie Plate, space the guides with the Adjustable Parallel, re-tighten, and have smooth crosshead travel.
The #1 side needed more adjustment than was available.
Drilled the existing 3-48 holes out with 3/16 Drill.