How about some carbon fibre top decks? Not just because I happen to be selling a set on oople
These are the Nick Caro 'carbon black' version and they take some of the flex out of the chassis and make it a lot more responsive, the lay up of the carbon is different to the kyosho brand ones and more suited to our astro tracks, link below if you want to take a look
I fitted them to my lazer and never took them off again, only selling as I will be running a different 4wd next year and no longer running the lazer
link to for sale