Mine does the same thing just wait for cold day and firmer snow and the rpms will go up.I just geared my 2011 Apex SE down from a 24 to a 23. I'm wondering if I'll need to adjust my clutching or not. Rode it Sunday but trails were real lose found a decent stretch but only pulled 10300 to 10400 did show 10500 or so but I contribute that to loose snow conditions but again trails weren't ideal. Maybe take a little tip weight out? Running Ulmers clutching