Prop shaft spacers

Having put a 4" lift on my 90 I've put wide angle props on but they seemed over extended for my liking so I invested in some spacers.
Is it ok to put two spacers on each prop, one each end?
Also when I've put a spacer against the handbrake drum the new bolts are still too short 45mm need to be 55mm does any one know where I can get some longer ones?
Thanks in advance.

ii only run a spacer at the axle end ! make sure you dont bind up the sliding joint under compression of suspension . as in twisters etc "!! i bought bolts from a local fastener supplier ! machine cap heads .black hard bolts and nyloc nuts!! never had a problem !!! good luck and dont forget to grease your uj s weekly !!!!