Yes, what you would want to do is go into the folder for the mod, and find a folder called "ITEMDUP". It will be filled with .itemduplicateandmodify files. These can be opened in a text editor. You will find all the same info that you would find in the FTD modding interface, but not necessarily in the same order. Look for the section with the "scaling" variables. You can adjust the "health scaling" number to your liking. I believe you can make this number lower than 1, such as .75, to reduce the block's health to 75% of what I made it to. I would, of course, make a backup copy of these files somewhere just in case, as the formatting is critical, even an extra space added in can break the block and make it not show up in-game.

Let me know if you need more guidance on this.