369 gearbox question

So I pulled my 369 transxaxle out of storage to strip off the old paint. The tube over he input shaft is cracked and worn. A new one came with the purchase of the unit. When I went to check the shaft for play it had a huge amount as if it had a ball end on it. Is this much play normal. Should I quickly get this to a transmission guy open up? Was thinking about getting a 1 piece shaft set from another member, Is this the cure?

Thanks for your advice.