I'm seriously looking at up grading from my current 2002 Glastron with a 5.0 GL Volvo/SX to a 2008 Stingray with the Volvo 5.0 GXI and newer style SX drive. Im curious about the external trim pump system and if this drive is as easy to do maintenance on like bellows changes and so on as my current style SX drive. Also has there been a difference in relability on these. Hope that Don S and any body else who works on a lot of these puts their 2 cents in. Thanks in advance.