The best thing to do is to have the power supply upgraded by having the caps n various other bits n pieces renewed like i did on my FRANKENSTEIN.
* Without even using a multi-meter, after 15 years plus of machine usage, i can guarrantee that it will be low on the voltage side of things. Check all connectors/pins on the GI side of things as well.

I know this sounds silly, but make sure all the bulbs are 44's and not low light 47's. Check all the 555's by comparing them to new 555's.
NOTE -The globes i buy from Mark C (PSP) are the best quality/brightest i have found. I recently swapped out all the bulbs on my Teenage Mutant Ninja Turtles , and Marks bulbs were so much brighter than the others i had previously purchased elsewhere. I dont know what brand Mark uses, but they are the brightest. Some of the others around are dull compared to the last batch i purchased and was very happy with.

Re the power supply, If u cant rebuild it yourself, wrap it well in bubble wrap, post it to Beaky, and have it made like new. It cost me apx $20 in parts. I am sure Beaky would conduct the work for next to nicks. PM Beaky or me if u want it overhauled.