Just for the record - the suspension block can be stiffened very easily by either fitting a metal hose clamp to limit its lateral compression [© Steve Parry], or by retrofitting a Birdy type of elastomer - which are available in 3 degrees of springyness. I have a green (hard) one on my Merc/brompton and it has improved things beyond all recognition.



Also - 'M' type bars are a bit of a compromise too - suited really only for commuters who want a very upright style of riding. This riding position is exaggerated by the [removable] stem thingie on the seatpost that makes for a smaller folded package but also a smaller 'cockpit' length. Remove this and the saddle goes back a couple of inches, which, with an 'S' type bar and handlepost setup ensures the ride is much more like a normal hybrid bike.

Also - With a little bit of judicious modification one can actually add an adjustable stem to the top of the handlepost so a more forward riding position can be achieved. - A brief guide by yours-truly here - about halfway down the page.

I know what you mean about it not being the best folded package in terms of staying in a unit - I think this is better with a model that has a rear rack, but it can be improved when you've learnt the best ways to hold and fold the bike - you need to make sure the seatpost is all the way down as this locks the rear triangle in position which in turn locks the forks and usually stops it all coming apart until you ask it to.

Just adding all this to the mix for you as they are good bikes and it's sad your experience with one wasn't 100% positive.