>>3 valve adjustments within 3 months .... but the ticking is still there.
>>Anybody have any suggestions on what else I can do?
Find a new dealer or competent independant in your area. The valves, when properly adjusted and tightened, do not require constant attention such as you describe.
>>Valve re-adjustment is really sensitive on the NSX. Tell this to the people doing the work, they should take their time for it, it's not a Civic...
This is untrue. The specifications for valve wear are completely normal, and the procedure and tools are exactly the same as a Civic! Where did you get this information?
As for your comment that Honda were "scared they had to take the engine out" to adjust the valves, this is ridiculous.