Again, thanks very much everyone for all your help!
IRF, i followed your path to Metalmickey's work and have played it on my Vita, and you are certainly correct, he has fixed the sprite and it runs way better than how the original JSW version was running.
I must credit Norman Sword once more though.... and certainly no disrespect to Metalmickey, but the Willy sprite in Norman's VK3 game is, for me at least, running super-smooth. The Metalmickey one does actually stammer a little bit. ...Like i say though, it's still awesome, a huge improvement, and the Metalmickey version of JSW will be the only one i play from now on, when playing 'regular' JSW.
I guess the icing on the cake is, along the way i've discovered Norman's crazy games hehheh :thumbsup:
After playing Norman's game for 20 minutes, i went back to regular JSW and it was like it was in slow motion :lol: hehhah...Just brilliant :lol: :lol: :lol: