To be honest I actually like that Dusclops only has 40 base HP. Not only does it make his Pain Split heal a lot of health, but it also makes him an amazing partner with Chansey. The reason for this is that Chansey can fully heal Dusclops with Wish, and Dusclops can take ridiculously strong Fighting attacks for Chansey so she doesn't die. Chansey can take the Ghost attacks, and the other special attacks. They're also an incredible ToxiStalling duo.
The only problem with the combo is that you really need something that can absorb or spin away Toxic Spikes, because that will wreck Dusclops. Tentacruel fits this role pretty well since he can both absorb and spin, as well as lay his own Toxic Spikes to help the stalling. Also, you need something that can take out Steel-types that will ruin the ToxiStalling. If you can compensate for these couple of problems, you've got a really potent walling duo that's fuckishly hard to break through thanks to Dusclops getting pseudo-Healing Wishes from Chansey, and both generally being really good mixed walls with Evo Stone.
The only problem with the combo is that you really need something that can absorb or spin away Toxic Spikes, because that will wreck Dusclops. Tentacruel fits this role pretty well since he can both absorb and spin, as well as lay his own Toxic Spikes to help the stalling. Also, you need something that can take out Steel-types that will ruin the ToxiStalling. If you can compensate for these couple of problems, you've got a really potent walling duo that's fuckishly hard to break through thanks to Dusclops getting pseudo-Healing Wishes from Chansey, and both generally being really good mixed walls with Evo Stone.