Hello
@Martaps I use the Tandem Slim but I use the steep tip (Trusteel) sets for exactly this reason, I was using Mio's on the Medtronic which would kink and fail and leave me high for ages as well as getting reactions to the teflon tubing, so left with red sore spots for days so stopped using them - I only use steel tip sets now and never have any fail, ask your DSN to add Trusteel sets to your prescription, once you explain why there won't be an issue.