hello everybody had my c4 transmission out at the shop last week to change my bellhousing and when it was put back in i noticed a serious leak ...guy at the shop said it is coming from the transmission pump seal ....it is leaking between the bellhousing and transmission how likely is this seal to leak ...it never leaked before and it was not leaking when i took it in to get the work done...also when he finisihed the job and we checked it it did not have any leaks but when i got home it was leaking...he said the pump had to build up the pressure. he said he can take the c4 to the transmission shop to replace the seal. just want advice from you guys on here is this a normal problem or may he have goofed up somewhere? also has anybody had this seal leak on them