Made the same modification that BigSven did and drilled out the top caps with a 5/8" bit, and then took a dremmel to add a little bit of additional clearance.
That looks great.
My shopping list:
Pulley Wheel (5 Pack) - $7.98: https://smile.amazon.com/gp/product/B077GMKW1C/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Timing Belt (2 Pack) - $18.88: https://smile.amazon.com/gp/product/B01AXRB13Y/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1
Total cost of mod: $28.84 after tax with free shipping.
Total time spent installing: 10 min drilling the top cap and sanding to proper clearance, 20 min installing pulley wheel + belt + leveling.