HELP Transom lamination went way wrong

[gregorymacc]

Any help would be greatly appreciated. I am in the middle of redoing my 93 oceanmaster transom. I am going at it from the inside I cut out the old core and ground down the glass etc... I went to laminate my 2 pcs of 3/4" penske board and the lamination did not go well. to the point I was able to separate the two pcs. I am using vynalester resin and I was doing the lamination in the sun yesterday 105 degrees but the ambient temp was around 68 degrees. I did the following
1. paint both sides of hte core with resin.
2. resin began to kick off way quick about 10 min
3. after seeing the resin almost cured but still a bit tacky I decided to lay down 1pc of 1708 cloth on one part of the core.
4. that began to cure quicly as well I figured due to the fact that I was in the dirct sunlight
5. I then mixed up 2 batches of thicked resin I under cataylsed a bit to compesate for the heat of direct sunlight. then samwiched the two cores together and weighted it down.
6. let it sit overnight and this afternoon went and checked the laminate and noticed that there was a small void in between the two cores next thing I know I was shoving wedges into the core and separating the core.

ANy help and direct would be much appreciated. I am thinking of switching over to epoxy because of the superior bonding. Can some one talk me off the ledge?