New HST Slipping??

[easygo]

I had the same thing going with the new to me 7510 HST I bought with 70hrs. It lurches a good one in high range and very little to none in low when taking off from a standstill. I notice it a lot less tho when the engine has warmed up. I talked to the dealer about it and he said it was normal. I didn't believe it until you guys wrote about it here. Thank you