They used to take the Jimmy Carter doubles up to Camp David for replacement and retuning, according to Dr. Beter in his Audio Letters, Audio letter #45 I believe.

So it's interesting that they always seem to be taking Biden up to Camp David.

Seriously, they are worth listening to, and extrapolate the information within to account for several decades worth of technological and biomechanical improvements.

They used to take the Jimmy Carter doubles up to Camp David for replacement and retuning, according to Dr. Beter in his Audio Letters, Audio letter #45 I believe.

So it's interesting that they always seem to be taking Biden up to Camp David.

They used to take the Jimmy Carter doubles up to Camp David for replacement and retuning, according to Dr. Beter in his Audio Letters, Audio letter #45 I believe.