I had the same problem in reverse - I learned on a PA38, moved to a different airfield and a C152 about a year after I got my PPL, and couldn't land it. What made it seem even worse was everyone told me the C152 was the easiest aircraft in the world to fly and it would land itself!!!
Eventually I managed landings, but recently I did a biannual check in a C152, and the instructor pointed out to me - after I'd nearly got us into a spin during a stall! - that I was still trying to fly it as though it was a PA38. She made the point that high and low wing aircraft are very different and that you fly them differently. No-one else had ever told me that; I thought it was just me having a problem.
So get a good instructor, and learn to fly the PA38. It's not a problem; it's just that you need to be TAUGHT what to do and it may take a bit of PRACTICE to get it right.