I had a Ziroli Zero with an older T&G 3.2 in it. I kept it pretty light at about 25-27 lbs and had a older T&G Sach 3.1 in it. It was no superstar but a very good everyday flyer. I used the Robart retracts in it. Dont remember the exact number but they were the 85 degree with the straight leg with the. The 154 number kinda sounds familiar. I also cheated on the fuse and made the nose about an inch longer so I wouldn't have to add too much nose weight. I only had to add a bit of weight in the nose to balance it.

Jack