Hey so I recently got a 25bigbox into my r32 no speedo drive yet but the hole is covered so oil ain't pissin out everywhere but this strange thing is occurring I can change 1-5 perfectly fine no crunches etc as it's a brand new reco box but changing from 4th to 5th it's like it just stays in 4th like 5th doesnt even exist. I'll push in clutch smoothly change from.4th to 5th and the rpm stays pretty much exactly the same like its still in 4th gear. Any ideas????