I have a DF508 and another random one, but not the same as you. Mine is 1898+1G>A.
But here's a page on your second one:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.genet.sickkids.on.ca/cftr/MutationDetailPage.external?sp=387">http://www.genet.sickkids.on.c...ilPage.external?sp=387</a>