I'm continually amazed at the amount of requests for help through this forum, by people who have not given the manufacturers the courtesy
of a phone call or email. . . . 
I think that this simple problem has the opportunity to escalate into a full flood. What would your response to that be. . . . 
Ikelite is continually reputed to have the best after sales service/repairs department, yet people continue to bi-pass them. . . . 
You may find yourself listing a complaint against them with your next posting because you voided your warranty by opening the strobe and
using a foreign product (loctite) within. . . . 
At least try the service department before any home 'tinkering'. It might be that the boys from Ike suggest a drop of loctite. . . .
Bruce...