Another viewpoint might be that the original instructor may have issue with your current instructor. He may not want you soloing on his signature while you are flying with the new instructor. There may be things going on behind the scenes that you are not aware of?
The two didn't know each other. At least the new one didn't know who the old one was.
With the old instructor you had to spend 7 hours in the pattern before he would let you solo. Maybe you needed that or the instructor was seeing something negative that you don't realize was going on.
Not according to either the new guy, or the one previous who worked for the now-defunct school. I know I'm not up to ATP standards, but given my student pilot status I fly pretty well, according to my instructors.
So did you move to an instructor that would give you what you want over what you really need. That more often than not is a reason that many students constantly change instructors.
This is the first time I have ever willingly changed instructors, and I did it for several reasons. First, the new one is a flying club member, so there are no hoops to jump through to make sure insurance requirements are met. Second, he's available pretty much any time I have an opportunity to fly, and with the club airplane there is VERY little conflict with other reservations (this was sometimes an issue with the school's planes). Third, the old instructor was gone for two weeks, during which time I was accepted as a member of the flying club. I had an opportunity to fly with the current guy, and that went exceedingly well. Not because he's a pushover, but because he's a damned good instructor. He knows how to fly AND how to teach, and helps me figure out how to correct things that I'm doing wrong.
The first time we went up in the 172 he had me do the usual maneuvers. The old CFI has been fine with my steep turns and ground reference; the new guy said the steep turns were nowhere near steep enough and the ground reference maneuvers were way too far out and not precise enough. In less than half an hour we'd fixed both of those problems.
So, yeah, I guess did switch to get someone who gives me what I want. What I want is GOOD flight instruction. High standards, constructive feedback and an experienced instructor.
I've been through several others. The first two were with a flight school that went out of business. The first one got a job that had him out of town for 2-3 weeks at a time, so I had to fly with the second. Then the school went TU. The one who did the solo endorsement was the one the new flight school gave me. This one is the fourth I've hired. If the first one was still around, I'd still be flying with him.