This piece looks fine. You have to keep in mind that Jimmy was a regular Trek convention attendee for 30 years, his earlier signatures were much fuller and with a bit more flair. The last few years of his life he was pushed into shows in a wheelchair and hooked up to an oxygen tank. Later signatures were kind of smooshed together like the one in the original post.
Thanks Pete. I thought I was good and this was a later in life signature but wanted to make sure. IV got an older nice full signature from him but was always curious about this one.