1. The constant slipping of the seat post you'll encounter on alot of folders. The problem results when the steat post touches the ground and drags dirt and oil inside the frame. You have to clean the post real well including the well where it slides inside. My Presto had this probem when it was new but as it aged, it stopped because the post became scratched. It was the scratched marks which provided extra grip.

2. They hinge is a problem but this was only after I abused the bike after four years.

3. I never had to set the handlbar since I'm 5'7 and only had to do it once. I guess if you're taller, this might not be the case.

4. Constant creeks are a problem with all folders.

5. Front tire flats, you have either a slow leak or the rim tape need to be replaced.