Had a heckler to and don’t regret selling that either, not a bad bike just to short for me.
The bushes are about £40 from Burgtec and they will take about 1.5 degrees of your head angle and lower your bb. You can then fit a longer fork withouit lifting the bb to much.
I have done it on my trance, top bush only with a slightly longer fork, shaved about 2 degrees in total. It a cheap way of changing your geometry if your bike is a bit steep.
Its my 5 chasing machine :D