My glow timer hasn't been working well for at least the last year on my 2015 HST. Over the past month or so, the glow plug light would sometimes stay on or flicker while it was running. When the last storm hit the northeast it wouldn't start. I finally broke down and bought the timer upgrade kit. Tractor started right up and ran like new. Two days later and another storm and turn the key, lights come on, glow heater light works for 20 seconds or so and goes out and nothing happens when I turn the key. Charged the battery, full charge and still nothing. When I jumped the solenoid, the starter would engage for a split second and then the drive would just spin. After a dozen or so tries of trying to start it with the key on and crossing the solenoid, all it does it spin but doesn't engage. Cables appear tight and clean. I haven't checked voltage yet. Sorry to be long winded but didn't know if someone had had the same experience after the glow timer update. I've never had any issues with the starter before. Going from turning over normally to making no sound at all I'm inclined to think it's a connection or ground issue somewhere. Thanks.