My Husqvarna ZT is hard to start when cold. I choke it and set the throttle at about 3/4. It will eventually start but I have to hold the starter on for about 10 sec. Longer if the outside air temp is cooler. I am concerned that this will cause too much wear on my starter and I will have to replace it prematurely. I was thinking about putting a primer bulb (like on an outboard) in the gas line. Any problems with doing that?