Frankie,
Hope i didnt confuse you too much, bad mouthing the inline reversers. They work, but just keep an eye on the centering of the servo, it will move. Make sure you have easy access to the reverser, so you can adjust the centering of the servo when you have to (they have a potentiometer which can be adjusted by a small screwdriver, which moves the center position of the reversed servo).

As an aside, do not mix makes of servo on the same reverser, most of them do not work.

If you have digital hitec servo's you can have one of them reversed $FOC by Hitec USA.

A matchbox is the ideal solution but if $$$'s are not available, use an inline reverser.

Cheers

W

PS: Be very very careful, swapping arms on elevator servo's to reverse them with horns on opposite sides. This almost never works as subtle differences in the setup will never give you correct matching of elevator halves.