outdoorman1234,
this is most likely not what you will like to hear: Go to an experienced tango teacher!
Seeking advice in the web can be misleading. Maybe your problem does not arise from your inherent body type, but from your posture, timing, embrace or focus on the wrong things. I can’t tell, because I can’t see or dance with you. A good teacher will spot your problem and give you a strategy to tackle it. Maybe the solution is an exercise. Maybe it is just a more gentle way in and out of the figure or a different preparation in the pattern.
A good teacher will also ask you about your immediate goals. If you want to do some fancy acrobatic stuff, flexibility might have priority number one. If it is your goal to have fun on a social dance floor, there might be other things far more important (musicality, separation of step an weight, navigation ...).
I don’t know for how long or how intensive you have been dancing tango, but many skills simple take time and practice to grow. The best practice in my opinion is to dance Tango. If you just practice anything, you will get good at that anything.
A friend of mine, for example, has to do his current shows with a Russian ballerina, because his partner is pregnant at this time. This has been a huge amount of work and trouble. The Russian lady has incredible skills, but they only helped so far. The ballet upward attitude is a real killer for tango. All her flexibility is no help for her because she isn’t used to be lead all the time tango-like.