1993 ax15 manual transmission

Hello all, A few things about this situation. Manual Idles fine Has full power Drives totally normal unless i down shift to slow down. Everything is normal until i push in the clutch then it dies out. More particularly, if the rpm’s are up while slowing and i push it in. It’s always dropped...

Hello hoping someone can help I bought a ax15 that was torn apart in boxes I have gotten it mostly put back together but have a small plastic piece that I have know idea where it goes. I have watched several videos online and none show this part. I don't know if maybe it doesn't belong or not...