Hi all, I am new with inflatables. I am confused when inflating my Intex Excursion 5. When I inflate to the 10cm mark according to the ruler that came with the boat, the raft still feels underinflated. I have been monitoring the raft with different temperatures. ( in the water, under the sun, etc) but it seems to me that still needs air. Should I pump more in? ? I just don?t want to bust it. ? Thank you