How to use SPRs?

I bought a set of C bearing SPRs and was wondering how to put them into a profly so I could have a thing but unresponsive pocket yoyo… any comments will help.

Remove the wood axle, put one spr in each half. The recess may be a bit deep and have to be shimmed, unless it completely covers the recess altogether.

The axle is too short :frowning:

Common Yoyo Axle Sizes

Just go to the hardware store and buy a screw of the proper size.

What pads do you use for SPRs?

At the time they were introduced dif pads or duncan friction stickers were suggested. Most any similar sized pad will work.

Thank you for being such a big help jhb ;D

That’s why they pay me so well. :wink: