After stuffing around with my bike bike for god knows how long I'm pretty sure I've worked out it has an intake manifold leak. Sprayed the back one with WD40 this arvo and the revs picked up as suspected. Its my own fault as I obviously didn't install the first set correctly.

Question is, is there some sort of gasket goo or sealant I can use that will help provide a better seal and stop it binding or pinching when I come to reinstall it. I think thats what happened last time as access is fairly limited so may have rushed it through a bit.

Any advice would be great

I always grease the rubber gaskets before fitting.
Allows the gasket to move when tightening.
Don't use gasket sealant.
Also check the manifold fit to the heads.

Thanks mate,

what do you mean by check the manifold fit to the heads though? Also in your experience, do you remove the tank or are you able to do it without removing?

With the manifold centered on the port, I like to see 5-10 thou' clearance between the manifold and the face of the head.
By the way, what bike are we talking about.
You could try unbolting the rear of the tank and tilting it .

Check the mounting flanges are flat as well.
They can bend.

Super glide mate, older one though 1997. wanted to avoid removing the tank again if I have to, the last time was a pain in the arse with draining it, etc. might try just tilting it then.
 

I used WD40 as well. I suppose a bit of engine oil would work too, but I'm no expert.