I decided to install FSX Acceleration to improve the performance of Weapons for FSX, but instead I have lost ground.  The modifications I had made to the CSWeapon.htm file that under SP2 resolved the continuous fire sounds for the machine guns except the M60 no longer work.  Now with Acceleration all the gun sounds go non stop. After installing Acceleration I went back and manually modifed the CSWeapons.htm as I had done with SP2, changing the loopEnd files to 0.000   When I opened the F-18s and ran the different weapons (guns, missiles, rockets) the guns reverted to the old problem, the sound continuing after releasing the fire button and not stopping until I exited the flight.  I need a new solution for that problem.
I'll report this to a different forum, but just so others know, the change also resulted in the XL Load F-18s loading without landing gear. The F-18s included in Acceleration are fine, but the XLoad aircraft are screwed up. I uninstalled and reinstalled them, no improvement, no landing gear.
This is discouraging.  I'm going to submit a ticket for the landing gear problem and a new ticket on the gun sound problem but this time with Acceleration, but I have yet to receive any acknowledgement of the ticket I submitted on sound for SP2.