Scott,
Thanks for the tip.
Martin
> Martin,
>
> If your '61 is like my '60 then the flange screws off. It may be a bit
> stuck, so you might need to take a scrap piece of wood, drill 2 holes in
> it to slide over the flange bolts (leaving one longer end) and turn with
> it.
>
> The tank on my '60 is fiberglass, I suspect that yours is as well and it
> should last the life of the trailer.
>
> Scott