Did you ever get the answer to this question?  I can't find it either.  I have a feeling it's easy, so I don't want to spend hundreds to have the shop do it.

Thia was a common issue back through those years. Below is a link to a DIY article that we put up back then for the LG50.

LG50 DIY article.

I run full stock balast + 750's in the rear a 650 bow sack and Infinity surf tabs. I get the best wave with the power wedge on max at 10mph. The best thing about the power wedge is at the touch of a button you can make the wave taller and shorter or smaller and longer. I used to use a clamp on fake gate that worked good then I installed surf tabs and the wave got better and the boat got easier to drive. I lower the surf tab and leave it down until we are done surfing. I have also had surfers cross the wake to the other side as I switch tabs manually. I'm not sure that Infinity is still around but a few years ago it was $1,000 cheaper than GSA. Surf tabs are the best mod I have ever done.

Is the tank full already? 

Do you have a second fueling port on the other side of the boat like my Rlxi? Open that if you do or fill from that side.

9 minutes ago, justgary said:

I was mostly curious to see how hard it might be to machine a new one and avoid the wait.

I had the boat out yesterday and the day started out fine but then it started leaking later in the day.  I'm going to have to take it off again, going to see if any caps become available soon before I go down the fabrication path.  I'll be sure to take a picture next time it's off.