Manual,
Like you, I used my Tyros 3 on it's first gig the very next day after getting it. I have provided a link below which has several conversion programs provided by Yamaha. I have used them on thousands of styles with good luck. Not all the styles convert well but the many that do sound very good.

I also play only senior gigs and have experienced the same response from them - especially when I added my Bose system to the mix. I also have not been thrilled with the balance of most of the preset styles and one-by-one have "tweaked" them as i needed them. Yamaha did not do a good job here in my opinion - but I have been told the Tyros 1 and Tyros 2 keyboards had the same problem.

I have owned my Tyros 3 since Dec. of 2008 and after about 7 months I have hundreds of songs setup with styles - it just takes time. I started out by selecting 50 of the most often requested songs and used them for gigs and each day I added a few more. I often use styles from other Yamaha keyboards and convert them. Sometimes they need no conversion at all.

Feel free to email me direct if you run into any questions.

here is the link.
http://music.yamaha.com/products/downloads.html?productId=1007003&hierarchy_id=20021_20023_16277


Hammer