I have noticed a similar issue as the mornings have gotten colder as well. I replaced my bad cdi with a Procom about a year ago. If I start the bike in the morning after it has been on the tender it fires right up, when I stay at my girlfriend's house and it is not on the tender it is fairly difficult to start. I just had the battery tested at the auto store and it tested good. I suspect that the issue may be the regulator/rectifier. I get around 14.5 volts idling at 1150 rpms but the volts drop as the rpms rise to around 12.5/12.4 at 4000 rpms. I am wondering if maybe a weak regulator/rectifier is preventing the battery from fully charging causing it to be on the border line of not having enough volts to fire right up when it has not been on the tender. I plan on ordering Rick's Hot Shot regulator/rectifier when i get paid next Friday. I will let you know if that corrects the issue.

2006 865 Neon Blue/Jet Black Speedmaster,790cams, TTP Stage 2 Firestarter, Epco Exhaust with 10.25" Samson Vrod baffles, UNI pods with 40 pilots, 150 mains,Thruxton needles, 3 turns out.