another tank cleaning issue
I've read probably all the way posts on the subject but still don't have clear solution (no pun intended). I have a 1971 Pearson 30 with a 1991Yanmar 2gm20f which probably has the old A-4 tank still in it. I know there is crud on at least the bottom, problem is, no inspection port and narrow, deep fill port only. The tank looks fine so don't want to replace, plus it would be a bear to negotiate it out and in. Some have implied getting a service to do it under these conditions but putting out one last shot at maybe someone finding a new solution. I probably can't jiggle a rag on a stick too much so my options are limited.
Any help appreciated.