The d130 is about 5 years old and needed a new belt. I installed one last week and it didn’t last long. Thinking back I realize that the tension cable should’ve been adjusted when I installed a new belt. The blades were delayed about a second to after engagement.
Thought about it a bit and...
Get that existing rust cleaned up and painted
Most decks wouldn’t be like this if owners spent 5 minutes after each use scraping the grass from the bottom.
Clean and prime or apply preservative at the end of the mowing season. Decks can last 20-30 years