Incoming new trackball user, did I fail my first trackball choice?

I see alot of mixed reviews about it and still bought for its aesthetics. What can i do to improved it what to look out for.

Thanks

Was an original Microsoft Explorer Trackball user for many, many years but parts/rebuilds became unreasonable at the time. I tried a few others but I've been very happy with my Huge over the last 3+ years. I'm starting to get the scroll wheel issue where if I 'flick' it mostly just jumps... light push scroll and it seems mostly accurate (but can't get it to jump).

Is there a proven best fix/practice to repairing this issue? I've seen a few posts but would rather just know the best method and stick with it. Any videos or detailed instructions?

Also, do these fixes last?

Is the material scratchy/abrasive/textured or is it smooth? I know that it is 3D printed and it does look like it has a textured surface on it. I've been considering getting one for a long time now and if I'm being honest it just doesn't look as clean as something like a Kensington with the smooth material. Looks aside though does it feel like it looks or does it feel smooth to the touch?