I have a 2010 RT-S with a full manual transmission. Recently, I have been having trouble shifting from 1st to 2nd when at running temperature. It shifts into 1st without difficulty, but when shifting from 1st to 2nd, occasionally it takes multiple attempts and frequently requires shifting back to 1st before attempting 2nd again. All other gears shift without difficulty. The clutch is working as expected. When cold, shifting is normal, no difficulties. There are no unusual noises and no error codes. Any information would be appreciated.