Just got a 9 yo saddlebred, only had her for 1 week now. She has been eating Solution pellets 14/6. Expensive and hard to find. I also have a quarterhorse and pony who eat Bartlett pellets maintenance. Going to attempt to switch her to bartlett too. Nervous about changing feeds, also have equalizer for the bartlett. My other 2 have had absolutely no weight problems. Advise appreciated.