It's by no means a perfect solution and, no doubt, the discriminating types on the forum will still comment but experience has taught me that when wearing a "saxon" jacket with a kilt, it's a tad better to find one that still gives you the sleeve length but feels a size too small and then don't button it. Several raids on thrift stores have netted me tweed jackets of varying fit, bought with the intention of converting them to kilt jackets and some of them are snug enough and short enough that they sort of work as kilt jackets. It's not the perfect solution but when you're the only kilty in the room...it gives the illusion pretty well. Look for the ones where the end of the sleeve is closest to the hem of the jacket...the closer/shorter, the better...and, as I say, don't button it...maybe a vest...that seems to help, too.

...and before the castigation (there's that word again!) starts...this is an emergency measure only! It's like patching your radiator hose with duct tape until you can get to a parts store and get a new hose!

Best

AA