> We had plenty of resin but the infusion rate was really slow toward the end

Pot life is usually determined for 100g batches, sometimes 200g batches. Larger batches if left in a container will react faster.

> As you can see in the picture we had peel ply on top of CF then infusion mesh on ends

Use infusion mesh on the whole part. Resin travel through peel ply is too slow. Peel ply alone is usually used as a resin brake to slow it down at the end of the infusion.

> We were using fiberglast system 2000

I don't know this resin, but I assume it is a normal laminating resin. What is its viscosity, in numbers? Is it low enough for infusion? If it doesn't specifically say infusion resin it probably isn't thin enough, especially not for larger parts. This can work for some infusion projects when used with slower hardeners, but often it doesn't.

> with 20 min epoxy hardener.

There you have it. Infusing a 20 minute resin for 35 minutes... it probably started to increase its viscosity even more before it had a chance to infuse the whole part. 20 minutes is too fast for this, you probably used up half of its pot life by mixing and degassing it.

Here is a picture at clamp off

So my brother and i decided to do our first infusion today and have a couple of questions. We wanted to do a small sample to get the idea of how to do it and didnt have the best success. We layered 2 sheets 0f .017 and 2 sheets of .010 CF at 8x10". We had plenty of resin but the infusion rate was really slow toward the end and eventually did not cover this small 8x10" piece. So i am trying to figure out what we did wrong. As you can see in the picture we had peel ply on top of CF then infusion mesh on ends with spiral tubing at inlet. Ran the pump for approximately 35 min before finally shutting off. We were using fiberglast system 2000 with 20 min epoxy hardener. Thoughts?