Cut off small "Y" shapes from scrap leather or old rubber (ballers/bracelets that are flat and made of rubber), trim the longest part as you see fit then you can use those to replicate the Burst resist gimmick of Gen Weight without sacrificing much needed weight or do it like a Burst stopper gimmick of the Chouzetsu trifecta.
Doing so, you can still use Ten/Sen/Zan/Metsu/Diabolos/Goku/Retsu with it. I'd call it "(Weight name) Plus/+" if just using one of those "Y" shaped things, and "(Weight name) Plus Ultra/+Ul" if using two, which is basically overkill since it is literally unBurstable.
You can check out my IG in kinghadoukenbeypla for a reference of the said mod:
http://tiny.cc/burstleathermod - that is not a virus, I just used a website to shorten the link.
Another mod that I have is basically shaving off the nub part of the Xtend Chip from the Xtend Driver stock until the hole is shown and the sharp point of the Xtend is protruding (in Stamina mode). Further modification/cuts/shave/file can be done. I dubbed it originally as "Xtend+ Poor Man's version", but it was too long so it was instead "Xtend Minus" since we only removed some plastic from it. My version 1 is in this link:
http://tiny.cc/burstxtendminus - also not a virus, only shortened the link.
The second version (that has defined Attack/Defense/Stamina modes) is in another picture, feel free to explore my IG page for more Beyblade Burst awesomeness and wackiness. I post my Gundam/plastic model builds there, too.
Ore wa tsuyoi da
IG: @kinghadoukenbeypla
(I try to post daily for things like Beyblade and Gunpla)