One key connection in the torso (where the 4733 stud fits into the center hole of the 4032 plate above it) holds much more strongly than you might guess. Stressing the model (dropping it five feet onto a hard surface, for example) usually knocks an arm off, but very rarely comes apart at that torso join.
Fitting attachments requires a little variation in some key places, replacing a piece with one more conducive to holding the attachment. There are only a few places where this can be done, but you can get a lot of flexibility out of those areas. In this exploded drawing of the Shorty, any of the pink pieces can replace the red one. Likewise, the yellow piece can be replaced by the light yellow and blue bits.
Here are some samples showing some of these replacements (as well as some other part swapping). Each is pictured with a plate containing an indication of how many of each type of dice the mech would use in a Mechaton game. If you’ve seen the game, this should be relatively straightforward. For the red dice, shorter ranges are closer to you, and the optional rules are used in some cases. Transparent pips are d6′s, solid pips are d8′s.
|2429||72: Dark Bluish Gray||2||Hinge Plate 1 x 4 Base|
|2430||72: Dark Bluish Gray||2||Hinge Plate 1 x 4 Top|
|2540||71: Light Bluish Gray||2||Plate 1 x 2 with Handle|
|2555||72: Dark Bluish Gray||2||Tile 1 x 1 with Clip|
|3022||72: Dark Bluish Gray||1||Plate 2 x 2|
|3023||72: Dark Bluish Gray||2||Plate 1 x 2|
|3024||72: Dark Bluish Gray||1||Plate 1 x 1|
|4032||72: Dark Bluish Gray||1||Plate 2 x 2 Round|
|4070||71: Light Bluish Gray||1||Brick 1 x 1 with Headlight|
|4081b||72: Dark Bluish Gray||2||Plate 1 x 1 with Clip Light Type 2|
|4590||72: Dark Bluish Gray||2||Plate 1 x 4 Offset|
|4697b||71: Light Bluish Gray||1||Technic Pneumatic T-Piece - Type 2|
|4733||71: Light Bluish Gray||1||Brick 1 x 1 with Studs on Four Sides|
|6019||71: Light Bluish Gray||2||Plate 1 x 1 with Clip Horizontal|
|6141||43: Trans Very Light Blue||1||Plate 1 x 1 Round|
|6141||71: Light Bluish Gray||1||Plate 1 x 1 Round|