Ragdoll too massive?!?

Hello, fellow UE4 users!

Recently, I have been attempting to create a physics simulator for a robot a friend of mine built. The robot is supposed to do three things, one of which I am having great difficulty in accomplishing. The robot has a ramp coming off the front of it. This, in conjunction with a jaw, scoops up a manikin (a ragdoll model that I created). Attached is a picture of the robot for reference:

However, I was having difficulty picking up the manikin with the robot. It would either push the manikin or run over it. I grew tired of attempting different things to no avail, so I started a new project and began experimenting with the basic vehicle project file. I imported the manikin and set it up as a ragdoll, just like I did in the previous project with the robot mesh. This time, I dropped a flattened cube on top of the car to use as a ramp. Below are the results of this experiment:

As you can see, the car would push the ramp up to the ragdoll, and then the ramp would flip over. I experimented with the rectangular objects found all over the basic vehicle project file. Those I was able to collect on the ramp, unlike the ragdoll. I noticed that the rectangular objects weigh about 82 KG where the ragdoll weighs about 2120 KG.

I am assuming I am running to these issues because of mass? If so, how do I change the ragdoll’s mass? I have looked all over the internet and I have not found any working way to change the ragdoll’s mass.

How can I fix this?

Thanks so much!
-Jack