Just bought this stroller and thought it was great at first but now i am hating it! If anyone else has one have you had any problems with it?

bought it second hand but in excellent condition, i did my research b4 buying, read heaps of reviews and tried it out first but now i have it home its not so great!

All the reviews i read said it steers really easy - and it does provided it is empty! When i put bub in {10kg} it is no longer easy to steer, really hard to manouvre - especially with one hand, and tips to the side.

Has anyone else had this problem? I don't want to get rid of the pram if i don't have to, maybe this problem can be fixed?

Any input would be much appreciated!
Thanks smile