Yes I have had issues with them sparking on switches, but I have had much worse problems with Lionel cars on Lionel switches. So look at it like this, not all cars are going to like all switches and track. I have fixed it with a small amount of nail polish on the switches where they spark. Cost, Price, Value is in the eye of the beholder. I have a set of seven Lionel Blue stripe passenger cars made across the left pond that would not run on anything and fell off the track that I paid big $$$$$ new for so I can deal with the Menards mini issues.
I like the nail polish remedy. In the past I have used a thin strip of electrical tape to insulate the side of the center rail on the switch to prevent the short during momentary wheel contact. I had a earlier problem with my 2-8-8-4 articulated steam engine that would short out diverting on an Gargraves 072 turnout entering my yard lead. With the help of the OGR Forum, the problem was solved with a strip of electrical tape. I never anticipated that rolling stock could experience the same contact problem, at least not until I ran some Menards cars on the layout. The cause of the spark must be the excess lateral drift of the wheel sets of some of the cars making contact with the center rail of a switch.
I will also be on the lookout for replacement trucks for the worst culprits at my next local train show/swap meet. Not all the Menards car experience the sparking problem.
Thanks everyone for the help and suggestions.
Dave