Before you belt mod a brand new mount you should check to see if your backlash is related to a loose worm gear in dec or ra
It could be worth adjusting this before you plunge more money into a Rowan belt mod
There are many sites which show you how to adjust this including a good site on Astrobaby.Com
A well “tuned” brand new HEQ5 should track well and guide under an arc sec when loaded to 65% of max payload provided the rig is balanced correctly
There are a lot of things you can do before heading down the Rowan Belt mod path , particularly knowing it’s a brand new mount
I hope others can chime in too
My 2 cents ......
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