So I recently got my permit and first bike, a 1985 Suzuki GS300L and have been practicing riding. Everything seems fine for the first mile or so, but after more than 5 minutes I notice it starts to lose power and when I stop the oil light and side stand light start flashing and the engine acts like it wants to stall. I check the oil and the level is fine but the dipstick is burning hot. is this normal? I did take out the air box due to it being infested with mice and I added a couple of generic "K&N" style filters to the carburetors. My hypothesis now is that it's taking in too much air and running too hot and maybe it needs the restriction of the original air box? would flashing oil and kickstand lights and not wanting to stay running when it's hot be an indication of overheating? Any insight would be appreciated, thanks.