I was a Cub dealer for 1 year. They have had terrible quality control problems at the plant. I was worried about selling any machine without going over it with a set of wrenches to check every fastener on it. It could take hours of adjusting and fixing stuff after uncrating a machine. They commonly forget to grease fittings, if they bother to install them, before shipping. Many misaligned decks, pulleys, belts, etc.
Parts availability was terrible as a rule of thumb. Common parts could take weeks, or months to get.
The only machines I saw in their lineup that had any commercial duty design were the commercial walkbehinds and the Tank series. They were solid machines, but still poorly assembled.
We told Cub to get their junk out of our shop at the end of the first year.