Unrelated to sporty issue but don't know where else to turn. My wife took up riding and bought a used suzuki gz250. It's been sitting for awhile. I bought new battery, plug, blew out the carb, treated with berryman b 12 along with the fuel treatment. I got it started and idling roughly but much improved over the last couple of days. The problem is I can't get it to start from day to day. The only way to get it started is by putting it on a trickle charger engine start feature. The bike doesn't seem to be drawing enough from the battery...Could something be draining it overnight? Even when it gets started and on the road it stalls out after downshifting and stopping. Any ideas? Thanks.