New model Stihl FS85 Trimmer fuel cap problem?

[Badgerado]

Just got a couple new Stihl fs85 trimmers and noticed the new model has a different fuel cap, (thread is on the out instead of in) they're really hard to get on and off (it's got the feeling of being misthreaded), we thought they might loosen up over time but it's been 2 months now and they're even worse, if you don't tighten them up ridiculously hard they can leak (and yes I know not to force threads lol)