I go to fill the bar oil res. yesterday and see the half moon black flip up thing on the cap is only half there. The shop said "under waranty just bring er in" (only had for maybe 2 weeks now?) and they gave me another. I bought a spare and spare for the gas too. They both seem really hard to turn, especially when its cold. This morning it is 6 degrees F, will probably warm up to 10 or so time I hit first tree. Is this gonna be a recurring problem? Don't believe I've seen it talked about here. Any advice? Thanks for all the perfeshinable opinions.