I am certain there are much more experienced persons on here who can provide more and better information, but I am wondering if your thick gesso is a result of using different compounds? (particularly the Holbeins)
I use rabbit skin or hide glue base, mixed with extra fine calcium carbonate, in a ratio that is about 1:2 of liquid to dry, and it is a medium-ish consistency for applying several coats of gesso. I sometimes use titanium or zinc white, or combine with another pigment(ie green earth, browns, or some such to give a tint to the base), and I dont usually have an issue. However, that being said, I don't have any issue with adding a few more mls of water to the gesso if it gets too thick - water will evaporate so the most important thing is to make sure you have the ratio of glue to chalk.
In looking into your materials, the holbeins is made of calcium sulphate, not the much more commonly used calcium carbonate. I am not familiar with the specific chemical properties of calcium sulphate, which is gypsum, but considering how gypsum is used (think drywall plaster and sheetrock) and how incredibly absorbing it is, maybe you need a modified recipe to use your specific base.
Marble dust or limestone are also calcium carbonate, at the chemical level. I have found marble dust works about the same in my gesso recipe, but that the tooth is not as fine as buying something specifically labelled calcium carbonate.
Good luck with your gesso! Maybe you could contact holbeins directly and they can offer advice on mixing their specific gesso, since they have a different chemical composition than most others. (at least that I have seen)
**EDIT: after poking around a bit online (curious about the Holbeins gesso) it seems that at least one recipe using this gesso is an oil gesso- using linseed and egg yolk (something I have never before seen used in the gesso component- and i make my own gessoed panels for both oils and egg tempera!) in combination with water, rsg, and the bologna gesso.
Maybe this can help you? Good luck!