dont listen to these boys, they rat on the GT mate. personally i own one and it rips. its got the GPX motor which is also in the Pitster Pro and is rated at the same level as the Lifan motors so there is nothing to worry about there, it performs very well and if very reliable. front shocks are really good from stock but throw in 5 - 7 20 cent pieces in each fork leg to make them a little stiffer and you wont regret it. replace the back shock, unfortunatly due to the frame being used its not possible to put a Fastace BS66-AR 280L but i would advise getting a Fastace 33-AR 280L as these fit nicly and work really well.
with regards to the ride mini's are meant to be sketchy and with the bigger wheels it hooks, nothing skecthy about it, if you know how to ride you wont have a problem and you will hold your own against the best riders here. (if your truly that good that is haha)
one of the biggest problem is the Chain Tensioner Spring losing its tension, allowing the chain to get some slack, now this could be the way im riding, how i have my shock set, it could be a number of things but this is something i would watch closly.
replace the stock roller with an after market one, do your standard maintainence and you will be good as gold mate. yes the swingarm is a little funny looking but its really REALLY strong (i have jumped up to 60 foot, flat landed from 12+ feet up and havn't had a problem apart from the stock shock which everyone has problems with, even over 2 foot jumps...
all things considered if i had the opportunity i would change the swingarm just to avoid my dramas with the chain tensioner but i am slap happy with my money and will spend 2k at the drop of a hat if i think it will do a better job, other people dont have that luxury to be able to do something like that too often.
run her in nice and keep up the maintainence and you wont hve problem.
Cheers, Tony.