Thanks for all the comments guys. I was shooting the bow for a while and I did - comparing it to my other good bows - feel it shot slightly spongy. So I shortened it to the original bow´s length (TtT: 154 cm/ 60") and re-positioned the shoulders on the top limb to its proper place. I suspect the spongy feel upon release of the arrow was due to the bow being too narrow for its length. Now the bow is very close to original measurements: 2-3 mm narrower and 0,5 -2 mm thinner. (1 mm = 0,04 inch). So pretty much bang on the original Holmegård´s measurements. Draw weight went up to 58 lbs @ 27" and that spongy feeling is gone. Also the tiller changed from a more round tiller to stiffer outer limbs and the handle start to put in a little work due to draw weight has gone up. Set rose marginally. It think the performance is now optimised for its design. Love this cool little bow.
New full draw: