You can use a needle to put some instant glue to the holes for the turn knuckle. Let it dry and use a 3.2mm drill as a truer. Remember not to use an electric drill. Your hands are strong enough.
Check if the bearing knuckle moves smoothly up and down without installing a spring. The key is to go to Ap Liu Street to look for the drills of the right size. There can even be a size of 3.15mm but I guess you have to buy a box set which may cost you a hundred something. Pay that because you'll find them very useful in the future.
好多位要麼走,令傳動暢順.電線位直朿.用灰車架.不同牌子的東西一起用要夾一下D位,好多時要改下size,eg ATM motor with 3 racing motor holder, the hoold of motor holder need enlarge.
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