dheaton,
One of the best things about this hobby is that it can and should be enjoyed in a multitude of ways! That being said, I personally like rebuilding and building locomotives, especially older ones. However, is your GS4 a pancake motor version? If it is then good parts are very difficult to come by. Most likely Bachmann will not have them in stock or even able to get them. If it is a newer type with a can motor, then I would try and order the drive wheel assembly. I checked with Bachmann website and they are currently sold out. From experience gluing the axle back into the plastic sleeve on the axle is difficult. If you try that make sure your timing is correct before the glue is applied for your drive wheels! Once you find a glue that will adhere, you will not be able to adjust the timing like you can with a good axle sleeve. Other things may be able to correct this problem as well though. If you have access to a small mill/lathe, you can make the sleeve and use it as intended, a friction fit. If it was me, I would send the locomotive and basic cost to Bachmann. Hope this helps, Stephen
One of the best things about this hobby is that it can and should be enjoyed in a multitude of ways! That being said, I personally like rebuilding and building locomotives, especially older ones. However, is your GS4 a pancake motor version? If it is then good parts are very difficult to come by. Most likely Bachmann will not have them in stock or even able to get them. If it is a newer type with a can motor, then I would try and order the drive wheel assembly. I checked with Bachmann website and they are currently sold out. From experience gluing the axle back into the plastic sleeve on the axle is difficult. If you try that make sure your timing is correct before the glue is applied for your drive wheels! Once you find a glue that will adhere, you will not be able to adjust the timing like you can with a good axle sleeve. Other things may be able to correct this problem as well though. If you have access to a small mill/lathe, you can make the sleeve and use it as intended, a friction fit. If it was me, I would send the locomotive and basic cost to Bachmann. Hope this helps, Stephen