390 racers: gearing?

How are you FE 390 riders getting along with the bike's overall gearing? Feeling the need to change it up, or fine with it as is? At a quick pace through the lower gears, does the transmission feel too "gappy"?

I'm not seeing a lot of options for it, being that the rear chain ring is about as large as they come, and going with a 12t front seems it would cause interference between the chain & swingarm buffer? I'm due to take delivery of an FE 390, but some riders' comments regarding power & gearing has given me pause enough to consider maybe opting for the 450 in its stead. My primary reason for choosing the FE 390 is the purported light handling and its prowess over gnarly terrain (2nd-3rd gear stuff). If the 450 offers similar benefits with a more flexible power delivery, I may have to change my order. :?

Thanks for the feedback. Good to hear about the 12t not causing problems. I'll have to scope out Lafferty's setup to see if there're any alterations for fitment.

Looking at the 390/450/570, they all seem to share the same trans ratios & final gearing, which is the same for a KTM 400 XC-W. So I'm expecting the 390 should be able to pull at least as well as the 400.