FD Oil coolers - upgrade or refurb

[Archbish]

So I have stock twin oil coolers on my FD, and they\'re somewhat tired. So I\'m tempted to replace with aftermarket twin 19 row types. But would I be better off just straightening all the vanes, jetwashing (or grit blasting) the current ones, and putting them back on? I\'m looking to go single tubby , so not really sure what the best approach is here.

This is technically best solution, rather than lazy arse solution.  If stock coolers are best, then so be it.  If an upgrade is a worthy exercise, then cool - where and what to get??

Thoughts?