Senior Telemaster is ok as it comes out of the box. It can be imporved immensely with several mods.

On my first one, built almost to plan, the vertical find & rudder were enlarged and the wing was converted to bolt on with functional struts. Power was a Fox 74.

When I was finished with it, I gave it away.

Second one built last year was inteneded to correct the faults of the original and improve the performance.

Major mods were to the wing:

1. clip 20% off the span since it's much bigger than necessary,
2. reduce the dihedral to 1/3 of that shown,
3. retain and improve the the bolt on feature used originally,
4. make a two piece wing,
5. use a solid, 24" long oak wing joiner inside a box spar with continuous 1/16" ply shear webs on each side of the spars the length of the wing joiner to be the box sides,
6. add center section sheeting for 2 bays,
7. add cap strips to all ribs, top and bottom from trailing ecge to front turbulator spars, top and bottom,
8. keep ailerons same length as original,
9. double up thickness of trailing edge every other bay for Robart giant scale hinge points - 6 per aileron,
10.add funtional wing struts,
11.use individual serovs on separate channels for ailerons to allow for flaperons

The vertical tail was enlarged again and shaped like a Cessna 180. This added at least 10% more area and improved the looks more tha 100%

The fuselage has its share of mods as well:

1. replace wood engine mounting system with aluminum engine mount for simplicity
2. cover front of lower fuse from LG mount forward with light FG cloth & epoxy resin
3. face all bulkhheads with 1/16" ply on each side
4. add diagonal cross breacing to top, bottom and sides of fuselage from rear of wing to stab to prevent twisting
5. add float support block to fuselage bottom
6. replace landing gear with that from Hangar 9 1.20 size Ultra Stick
7. install scale styule spring tailwheel assembly

Other than changing the shape and size of the vertical fin and rudder, the only change to the tail was to add interrnal diagonal bracing in the stab between the ribs.

Very little extra wood was required sinc in most cases whatever came in the original kit was able to be used or modified for use in a loctaion other than where originally intended.

No kit hardware, such as it was, found its way into the modified plane.

A few other little items include using Du-Bro inflatable 1/4 scale Cub wheels, a 500cc fuel tank and an OS 1.08 swinging a 15-8 Zinger wood or Master Airscrew prop.

It flies much better than my original Senior Telemaster. And even with an all up weight of just under 12 pounds, glides forever. You must be very conscious of airspeed and rate of descent on landing.

In the air, you cannot kill the airframe whatever you do. I've even tried terminal velocity dives with 180 degree pull out with not structural failure. So I'm certain that this plane can also carry a few extra poinds in payload.