I got out my Topaz to see if there is a difference in doing the strips. Big time difference as there is little to no bowing. The fabric just feeds through beautifully. Now I'm confused about the Horizon's ability to piece. I went through again and had the same results. Topaz has near perfect strips and the Horizon has bowed strips.
The only thing I can think of is that the Topaz's 1/4 inch foot seats perfectly on the 7mm feed dogs and the fabric feeds through both dogs. It appears that Janome machines only has fabric feeding through the left dog. Oh..I hope I'm not going to have the same problem that I had with the 6600 on piecing and the fabric moves to the upper left. Janome REALLY needs to design a 1/4 foot that truly seats the fabric on both feed dogs.
Or am I just crazy? I think I will always be a Viking fan, despite having the Horizon. I will say the Horizon beats my Topaz at FMQ big time so maybe it's a trade-off.