No problem. I like looking carefully at the rules to make sure I'm doing it right. If you find I'm running something off kilter (which is way too easy), then please tell me. I'm trying my very best to run this well, so don't worry about second guessing my decisions. Running original Star Frontiers is actually really hard, because the original rules are much more difficult to use and justify compared to a modern straight-forward system. When I added house rules, I was hard pressed NOT to just keep adding more and more. The last time I ran this same campaign, I gave up at the beginning and ran a set of home-brew rules. As an easy example, I can point to that "lava race" last session, which was just too complex. Even, if there had only been two vehicles, I bet it still would have been too complex to be fun. So, I quickly broke the rules for the purpose of gameplay, and broke them several times as I made split-second decisions during that race. From my point of view, it ran terribly, so I hope you guys had more fun with it than I did. Regarding the tangler grenades, the only rules I have to go on is the specification on p27 and the explanation on p43. If you make the RS check, your or have more than 100 STA, you are not entangled. The first reason is obvious (you dodged or rolled away from the grenade), the second is less so, but I think implies you are a BIG monster so it can't cover you. Either way, the effect on p27 only specifies that you can't move, which is great for stopping a fleeing enemy or an animal that specializes in melee. It's also great because it can't be blocked by something simple like a gas-mask for doze grenades. However, it doesn't say you can't attack - which I think makes sense, since it's just sticking you to the floor. Regarding the "black blob" in the basic rules intro story, I never considered it to be a tangler grenade. To me, it sounded like a Sathar organism which I interpreted as killing the target. Regarding another house rule for tangler grenades - I think you may want to consider both sides. If you get a STR check to break it, it becomes less effective. Especially if you get more than one try. I can easily imagine materials where STR just doesn't matter - such as the plastics on those hospital wrist bands. I bit one off once because I was so annoyed by it, but you can't tear them. However, as a GM, I will always mitigate special circumstances. For instance, there are no rules for wiring a vehicle parabattery to create an EMP pulse to short out of bunch of robots. If you use your equipment (knives or snips?) you could probably cut your way out of a tangler quicker than the 30 timer.